”There is no universally accepted theory explaining the root of sexual masochism, however, several ideas have been advanced. One theory suggests that paraphilias originate when inappropriate sexual fantasies are forbidden, and become stronger as they are suppressed. Another theory suggests that sadomasochistic behavior is a form of escape from one’s thoughts and allows the practitioner to enter into something resembling a meditative state. Through acting out fantasies, individuals allow themselves to feel new and different. Another theory suggests that childhoodtrauma, such as sexual abuse, can later manifest in a paraphilic disorder.”
The exact cause of sexual masochism disorder is not known yet. But it is thought, excessive porn watching can triggered it.
I found an article about this topic:
”There is no universally accepted theory explaining the root of sexual masochism, however, several ideas have been advanced. One theory suggests that paraphilias originate when inappropriate sexual fantasies are forbidden, and become stronger as they are suppressed. Another theory suggests that sadomasochistic behavior is a form of escape from one’s thoughts and allows the practitioner to enter into something resembling a meditative state. Through acting out fantasies, individuals allow themselves to feel new and different. Another theory suggests that childhoodtrauma, such as sexual abuse, can later manifest in a paraphilic disorder.”
https://www.google.ro/amp/s/www.psychologytoday.com/us/conditions/sexual-masochism-disorder%3famp